Which of the following is included in the dorsal cavities?

The dorsal cavities of the body consist specifically of the cranial cavity and the spinal cavity. The cranial cavity houses the brain, while the spinal cavity contains the spinal cord. These cavities are located along the posterior (back) aspect of the body and are protected by the bony structures of the skull and vertebrae, respectively. This anatomical arrangement is essential for the protection of these critical components of the central nervous system.

The thoracic and abdominal cavities are part of the ventral cavity system, which is oriented toward the front of the body. While the pelvic cavity is also part of the lower abdomen, it is not classified under the dorsal cavities. Understanding the different body cavity classifications helps in organizing the anatomical structures and is fundamental in veterinary and medical practice.